A service that watches files, and triggers actions when changes occur. More information: https://facebook.github.io/watchman/docs/cli-options.
watchman watch-project {{path/to/directory}}
watchman -- trigger {{path/to/watched_directory}} {{trigger_name}} '{{pattern}}' -- {{command}}
watchman watch-list
watchman watch-del {{path/to/watched_directory}}
watchman watch-del-all
watchman trigger-list {{path/to/watched_directory}}
watchman trigger-del {{path/to/watched_directory}} {{trigger_name}}
watchman, until the next time you call a watchman command:watchman shutdown-server